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CAS 21109-95-5

CAS 21109-95-5 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 21109-95-5

CAS 21109-95-5PubChem CID 6857597

Barium sulfide

Barium sulfide is a sulfide salt and a barium salt. — ChEBI

IUPAC name: barium(2+) sulfide

Molecular formula: BaS
Molecular weight: 169.39 g/mol
Exact mass: 169.877318 Da
Topological polar surface area: 1.0 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 1
Covalent units: 2
Defined stereocentres: 0

Also known as

Barium sulphideBariumsulfidBARIUM MONOSULFIDETV3U2GEW4HCHEBI:32590RefChem:916717barium(2+) ion sulfanediide244-214-4

9 more reported names

Barium sulfide (bas)barium(2+);sulfideBarium sulfide, blackEINECS 256-814-3EINECS 232-376-9barium hydrogen sulfideUNII-PET6ZVZ3MK[BaS]BARIUM SULFIDE [MI]

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External database identifiers

ChEBI:CHEBI:32590
EPA DTXSID:DTXSID30892157

Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 21109-95-5

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How CAS 21109-95-5 is used on this site

CAS 21109-95-5 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 21109-95-5 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.